Freebee Friday: Our Changing Earth

Here’s a cool visual lesson about our impact on our planet.
Go to NASA’a Landsat earth-observing satellite page and show some of the images
and time-lapse videos that have accumulated over Landsat's 40-year lifetime. The site
has everything from high-resolution photos from space of the current fires in
California to videos of how urban centers like Las Vegas evolved over time and the
earth’s glaciers are receding. Each comes with a nice description of what
you’re seeing along with the science involved, perfect for a visual lesson
about our changing earth.

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